function [img_map, img_stripe] = make_map(size_height);
 size_width = size_height*2;
 img_map = zeros(size_height, size_width);%double
 img_stripe = zeros(size_height, size_width,'uint8');
 pi = 3.141592653;
 offset = int16(size_height/2);
 radius = size_height/pi;
 for idx = 0:size_height/2-1
     weight = cos(idx/(radius));
     img_map(int16([offset+idx,offset-idx]),:) = weight;
     img_stripe(int16([offset+idx, offset-idx]),:) = uint8(254*(1-weight)+1);
 end
     
 figure
 imshow(img_map);
 figure
 imshow(img_stripe);
end